Cavitation occurs when the impeller is starved for water and cannot maintain the discharge requirements. The sound of the pump changes when it is cavitating. In severe cases the pump and motor may vibrate. The pool operator must check the obvious reason for cavitation:
- Debris in the skimmer basket.
- Debris in the hair and lint basket.
- A Dirty vacuum filter.
- (#1 REASON) Partially closed or restricted suction line (either one or both valves for main and/or skimmer are restricted).
- A throttling valve on the effluent line not properly restricted.
- A leak in the plumbing on the vacuum side of the circulation system.
- Plumbing PVC feeding the pump (vacuum side) may be too short reducing flow (PVC should extend horizontally 6-8 inches/min. in front of pump)
Cavitation is a symptom of a problem and a professional pool repair company can easily identify ways to resolve the issue. If allowed to continue, cavitation may result in serious damage to the pump, motor or both.
Red Square Pools
Persident / Founder